My sister met him at the Grand Theatre yesterday afternoon，so he ________your lecture．
A．couldn’t have attended B．needn’t have attended
C．mustn’t have attended D．shouldn’t have attended

My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.

1. A.
   couldn't have attended
2. B.
   needn't have attended
3. C.
   mustn't have attended
4. D.
   shouldn't have attended

My sister met him at Ningbo Grand Theatre yesterday afternoon, so he         your lecture.

1. A.
   couldn’t attend
2. B.
   mustn’t have attended
3. C.
   shouldn’t attend
4. D.
   couldn’t have attended

My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.

A. couldn’t have attended                   B. needn’t have attended

C. mustn’t have attended                            D. shouldn’t have attended